ui: set the job namespace when redirecting after the job is dispatched

[lgfa29]

After a job is dispatched via the UI, the user is redirected to the newly created job. But we were not setting the namespace so the redirect would result in a Not Found error message.

Closes #11121

[github-actions]

Ember Asset Size action

As of 94b9641

Files that got Bigger 🚨:

File	raw	gzip
nomad-ui.js	+62 B	-2 B

Files that stayed the same size 🤷‍:

File	raw	gzip
vendor.js	0 B	0 B
nomad-ui.css	0 B	0 B
vendor.css	0 B	0 B

[github-actions]

Ember Test Audit comparison

	main	94b9641	change
passes	1123	1135	+12
failures	0	0	0
flaky	0	0	0
duration	7m 37s 726ms	7m 51s 763ms	+14s 037ms

[github-actions]

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